Advances in cryo-electron microscopy (cryoEM) for structure-based drug discovery.

Area of Science:

• Structural biology
• Drug discovery
• Biophysics

Background:

• Macromolecular X-ray crystallography (XRC), nuclear magnetic resonance (NMR), and cryo-electron microscopy (cryoEM) are key techniques for determining 3D macromolecular structures vital for drug discovery.
• The Protein Data Bank (PDB) is a critical resource for 3D macromolecular structures, with increasing importance due to AI and cryoEM advancements.
• Developments in cryoEM and AI necessitate improved quality metrics and validation standards for experimental structures.

Purpose of the Study:

• Review recent advancements in cryoEM for drug discovery.
• Analyze cryoEM structure quality metrics, resolution, and refinement.
• Compare cryoEM with XRC and NMR, highlighting cryoEM's expanding role.

Main Methods:

• Review of recent literature on cryoEM advancements in drug discovery.
• Analysis of structure quality metrics, resolution, and identification of ligands/water molecules.
• Comparative assessment of cryoEM against X-ray crystallography (XRC) and nuclear magnetic resonance (NMR).

Main Results:

• CryoEM is revolutionizing structural biology, especially for large, complex molecular interactions.
• AI integration with cryoEM enhances particle identification and 3D structure determination.
• CryoEM facilities are expanding globally, increasing its significance in drug discovery.

Conclusions:

• CryoEM is becoming a pivotal tool in drug discovery, driving the development of novel therapeutics.
• Advancements in cryoEM support diverse applications including vaccine design and gene therapy.
• The synergy between AI and cryoEM is accelerating the pace of structural determination and therapeutic innovation.